Gas-burner.



A. BRAY.

GAS BUR APPLICATION FILED 8.1918.

4W FQRNEY 1,93. Patented Oct. 15, 1918.

'AR'IHUR BRAY, 0F LEEDS, ENGLAND, ASSIGNOR TO GEORGE BRAY & COMPANY,

LIMITED, 015 LEEDS, ENGLAND.

GAS-BURNER.

To all whom it may concern:

Be it known that I ARTHUR BRAY, a subject of the King of (irreat Britain and Ireland, and residing at Bagby Works, Leicester Place, Leeds, in the county of York, England, have invented certain new and useful Improvements in or Relating to Gas-Burners, of which the following is a specification.

This invention relates to gas burners for lighting purposes of the luminous flat flame type. In such burners the body is a brass tube cylindrical along the greater part of its length and having its lower end tapered and screwed for fixin into the socket of the gas fitting. Inside t e cylindrical tube a diminisher is inserted for the purpose of throttling and steadying the flow of the gas to the burner, and also for providing that the flow shall be uniform at the upper part.

of the body. A steatite or other tip with the usual orifice for the exit of the gas is securely fixed to the upper end of the cylindrical brass body. The diminisher as usually employed in present practice consists of a small plug of pot ware pierced with a central bore expanding toward the top of the plug and having a paper washer at the bottom of its outer surface and seven or eight disks of muslin suitably fastened over the top of the plug. The said disks of muslin are held in position in the metal socket by one or more rings of zinc or other suitable metal. The diminisher is inserted toward the bottom of the cylindrical brass body but no part of it projects into the tapered part thereof.

The object of the invention is to provide a burner with improved means for securing the desired uniformity of flow of the gas through the upper part of the body, securing greater freedom from hissing which may be due to slight pulsations in the pressure and velocity of the gas in the upper part of the burner.

Another object of the invention is to reduce the manufacturing cost of the burner.

The invention consists in an improved form of diminisher having a bore consider ably longer than its diameter giving in creased resistance to flow and adapted for location mainly in the lower end of the bod The improved diminisher occupies less space axially along the cylindrical body of Specification of Letters Patent.

Application filed August 28, 1918. Serial N 0. 251,811. 1

Patented Oct. 15, 1918.

the burner, and requires a less axial length of expansion chamber between the diminisher and steatite or other tip. From these two causes the total length of the brass body is reduced by nearly 33 per cent. thus eifecting a saving in metal, and in the cost of the drawing operations required to produce the tubular body from a sheet metal blank.

I append a sectional drawing on an enlarged scale illustrating my invention as applied in one form to English type burners having an outside taper screw.

In carrying the invention into efl'ect in one form as applied to English type burners having an outside taper screw, the diminisher D is tapered, and fits into the taper part of the vburner socket, and projects above the bottom of the tubular body of the burner. Three or four disks of muslin M or the like are fastened above and in contact with the upper end'of the diminisher by one ring of zinc or other suitable material as above described. with seven or eight muslin disks, it is found that more than four disks cannot conveniently be fastened by one ring.) The folded edges of the muslin disks fit tightly inside the tubular body, near the lower end of the cylindrical part thereof, thus preventing passage of the gas except through the meshes of the muslin. The bore of the diminisher is reduced in diameter as compared with that required hitherto and made longer, thus increasing the throttling or steadying action of the diminisher. This increased resistance of the diminisher enables a smaller number of muslins and their holding rings to be used, and consequently enables the length of the expansion chamber between the diminisher and the tip to be reduced.

Thus the invention provides an improved burner with a shorter body than required hitherto, which can be manufactured at a lower cost.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. A gas burner of the type described comprising a tubular metal shell, a diminisher located in the lower portion of said shell and having a bore of considerably greater length than diameter, porous material located (In the usual form of diminisher in the shell above the diminisher, a ring for securing said porous material in place, and

a tip locatedy at the upperend-of: the ishell in like 'frietionally held aboyenthe diminisher' close proximity to said ring. by a single ring, and a tip of steatite or suit- 10 2. A gas burner of the type described, comable material at the upper end of the, tubu prisinga tiibular metal-shellorbody tapered lar she'll in close roximit'y'to the said ring 5 and screwed at one end, a diminisher having and muslin fdisks. I

its bore of considerably greater length than In testimony whereof I have signed my its diameter and fitting in the tapered part name to this specification.

of the tubularvshell, disks-of muslin or the ARTHUReBRAY.

Copies of this patent may be zobtainedsfor, five ,cents=aeach;;by addressing.the. Commissioner of Patents, Washington, D. G. 

